# Bell on Bell's theorem: The changing face of nonlocality

@article{Brown2014BellOB, title={Bell on Bell's theorem: The changing face of nonlocality}, author={Harvey R. Brown and Christopher G. Timpson}, journal={arXiv: Quantum Physics}, year={2014} }

Between 1964 and 1990, the notion of nonlocality in Bell's papers underwent a profound change as his nonlocality theorem gradually became detached from quantum mechanics, and referred to wider probabilistic theories involving correlations between separated beables. The proposition that standard quantum mechanics is itself nonlocal (more precisely, that it violates `local causality') became divorced from the Bell theorem per se from 1976 on, although this important point is widely overlooked in… Expand

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#### References

SHOWING 1-10 OF 125 REFERENCES

Quantum non-locality—it ainʼt necessarily so...

- Physics, Mathematics
- 2014

Bellʼs theorem is 50 years old. There still remains a controversy about its implications. Much of this controversy has its roots in confusion regarding the premises from which the theorem can be… Expand

Philosophical Consequences of Quantum Theory Reflections on Bell's Theorem

- Mathematics
- 1989

From the beginning, the implications of quantum theory for our most general understanding of the world have been a matter of intense debate. Einstein argues that the theory had to be regarded as… Expand

Time, Quantum Mechanics, and Probability

- Computer Science, Physics
- Synthese
- 2004

It is shown that the relational theory needs nothing more than the physical, minimal criterion of identity as defined by Everett's theory, and that this can be transparently interpreted in terms of the ordinary notion of the chance occurrence of an event, as witnessed in the present. Expand

Causality, Bell's theorem, and Ontic Definiteness

- Mathematics, Philosophy
- 2011

Bell's theorem shows that the reasonable relativistic causal principle known as "local causality" is not compatible with the predictions of quantum mechanics. It is not possible maintain a satisfying… Expand

John S. Bell’s concept of local causality

- Physics
- 2011

John Stewart Bell’s famous theorem is widely regarded as one of the most important developments in the foundations of physics. Yet even as we approach the 50th anniversary of Bell’s discovery, its… Expand

The Two Bell ’ s Theorems of John Bell

- 2014

Many of the heated arguments about the meaning of “Bell?s theorem” arise because this phrase can refer to two different theorems that John Bell proved, the first in 1964 and the second in 1976. His… Expand

Does Quantum Nonlocality Exist? Bell's Theorem and the Many-Worlds Interpretation

- Mathematics, Physics
- 2000

Quantum nonlocality may be an artifact of the assumption that observers obey the laws of classical mechanics, while observed systems obey quantum mechanics. I show that, at least in the case of… Expand

Locality in the Everett Interpretation of Heisenberg-Picture Quantum Mechanics

- Physics
- 2001

Bell's theorem depends crucially on counterfactual reasoning, and is mistakenly interpreted as ruling out a local explanation for the correlations which can be observed between the results of… Expand

Individuality, supervenience and Bell's theorem

- Philosophy
- 1989

Some recent work in the philosophy of quantum mechanics has suggested that quantum systems can be thought of as non-separable and therefore non-individual, in some sense, in Bell and E.P.R. type… Expand

The Many-worlds interpretation of quantum mechanics

- Computer Science
- 2015

This volume contains Dr. Everett's short paper from 1957, "'Relative State' Formulation of Quantum Mechanics," and a far longer exposition of his interpretation, entitled "The Theory of the Universal Wave Function," never before published. Expand